But he struggled mightily in two of his other three seasons and was a healthy scratch in many games last season.
Del Zotto, who said he was looking forward to facing the Rangers, has been pushing himself in the weight room and in on-ice workouts this summer, trying to get in the best shape of his life.
"Last year, it just seemed I lost my confidence early in the season, and it's a confidence game," Del Zotto said in a conference call with reporters. "If you don't believe in yourself and don't believe in your ability to make the plays you need to, it's tough to go on from there.
"I didn't really get much ice time after the first week of the season; we had a tough start to the year . . . and it just kind of spiraled from there and was a bit of a domino effect."
He added, "I'm excited to join Philadelphia - a great team and a great opportunity for me."
The Flyers are hoping a change of scenery helps Del Zotto as it did for goalie Steve Mason, who had a brilliant rookie season in Columbus but then floundered until he was traded to the Orange and Black, reviving his career.
An offensive-minded defenseman, Del Zotto figures to be paired with Braydon Coburn or Luke Schenn. He said he likes the Flyers' attack. They have "a lot of offensive ability, and I think that's where I can step in and move the puck up to those forwards, who can make plays, and be able to join the rush."
With Del Zotto in the fold, the Flyers are about $4.6 million over the $69 million cap. Teams can go 10 percent over the cap in the summer.
The Flyers will gain about $6.9 million in cap relief when Timonen and Chris Pronger are placed on the long-term injured reserve list.